davidson



(No Model.)

D. J. DAVIDSON.

PUREIBR, SBPARATOR, AND GRADER. No. 542,011. Patented July 2, 1895.

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NITED STATES Pnrleiwry OFFICE.

DAVID J. DAVIDSON, OF PORT HURON, MICHIGAN, ASSIGNOR TO THE DAVIDSON, MARTINIVIANUFACTURING COMPANY, OF SAME PLACE..

PURIFIER, SEPARATOR, AND GRADER.

SPECIFICATION forming part of' Letters Patent No. 542,011, dated July 2, 1895.

Application filed October' 16, 1 8 94.

To all whom it 12v/ay concorre/f Be it known that I, DAVID J. DAVIDSON, a citizen of the United States, residing at Port Huron, county of St. Clair, State of Michigan, have invented a cert-ain new and useful Improvement in a Purifier, Separator, and Grader; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form apart of this speciiication.

My invention relates to certain new and useful improvements in a purifier, separator, and grader adapted for purifying, separating, and grading grain and other commodities; and it consists of the construction, combination,and arrangement of devices hereinafter specified and claimed, and illustrated in the accompanying drawings, in which- Figure l is a vertical section illust rating my invention. Fig. 2 is an end elevation looking toward the vertical trunk into which the stock is fed. Fig.3 is a vertical section on the line 3 3, Fig. l.

My invention is designed more particularly as an improvement upon a device of this class shown and described in a patent to Charles E. McNeal, No. 499,468, granted June 13, 189 3.

My invention contemplates a substantially air-tight structure in which the air is directed by a fan in a continuous current round and round through the machine.

The machine belongs to that class of devices wherein is provided a separating-chamber. (Indicated in the accompanying drawings at A.) At one side of this separating air-chamber A, I arrange a vertical air-truuk B, the lower leg B of said air-trunk being preferably more contracted in its dimensions than the upper portion of said air-trunk, as Shown more particularly in Fig. 1 of the drawings herewith submitted. i

The air-chamber A and the air-trunk B are formed with an inclosing caseC of suitable form. The case at the base of the chamber A is preferably formed with inclined walls C C2, forming a V-shaped dead-air chamber A at the base of the chamber A. The side of Serial No. 526,101. (No model.)

the case oppositethe trunk B is preferably of curved form, as shown at C2.

D denotes a fan-case located toward the upper end of the machine and preferably toward the side thereof opposite the upper end of the air-trunk B. D denotes a fan in said casing, the casing communicating with the interior of the machine, as shown at d.

Within the casing above the air-chamber A, I locate inclined walls or cant-boards E and E', forming a dead-air chamber E2 'of V- shaped form. The inclined walls E E sepa- Y rate the chamber A from a chamber E3 thereabove, the chamber E3 communicating with the fan'-case through the passage d. and with the upper endof the air-trunk B, as through an opening b. Y

' The air-trunk B is formed by the casing C and an inner wall B2, in which is formed the orifice b, and at the base of which wall is formed an opening b', through which the chamber A communicates with the trunk B, the narrowed portion or leg of said trunk being below said orifice b. The fan-casing also communicates with the chamber A toward the top of the machine, as through an opening d between the fan-casing DV and the outer casing C.

Within the casing C, I locate a partition F on the side opposite the air-trunk B, forming between it and the adjacent portion C3 of the case C a settling-chamber G. At the top of the partition F, I locate a diaphragm F', the diaphragm preferably having a jointed connection, as shown atf, with the upper end of the partition, whereby the diaphragm may be changed in its position, as indicated, for example, in dotted lines, to divert the air-current more or less on either side thereof. At

the lower end of the partition F, I locate an additional diaphragm F2, said diaphragm having a jointedconnection also, as at f', with the lower end of the partition F. Between the lower end of the partition F and the upwardly-projected end of the inclined wall C2, I form an air passage or opening H, through which the chamber G communicates with the chamber A. Beneath the diaphragm F2 is thus formed a settling-chamber G', formed by the lower end of the outer casing C3 and an ICO inclined wall C4. A passagelway or opening is formed between the fan-casing and the upper edge of the diaphragm F, as indicated at A2.

Toward the lower end the partition F is preferably extended at an incline, as shown at f2, to form a deflector, an additional deflectorf3 being engaged with said partition F and projecting into the chamber A above th-e opening H to divert or deflect the stock from going into the chamber G through the opening Il toward the air-trunk B. Within the chamber A, depending from the inclined wall E', is a diaphragm J, preferably having a jointed connection, as shown at j, with a depending bracket J. Within the chamber E3 and depending from the top of the case, between the opening b and the fan casing, I locate an additional diaphragm K, said diaphragm preferably having a jointed connection, as indicated at 7c, with the case at its upper end.

Any suitable means maybe employed to adjust the position of the diaphragms F, F2, J, and K and to hold said diaphragms in any given position of adjustment. Thus, for eX- ample, a toothed bar J2 may be provided to hold the diaphragm J in any given position, said diaphragm being provided with a loop j? to engage said toothed bar. So, also, a toothed bar K may be provided to hold the diaphragm K in any given position of adjustment, said diaphragm being provided with a loop la to engage said toothed bar. The case may be provided with suitable hand-holes or other means for adjusting the diaphragms with relation to said toothed bars.

At the base of the vertical trunk B is any suitable discharge-valve b3. At the base of the chamber A is also located a dischargevalve of any suitable construction, as indicated at c. So, also, at the base of the chamber G is located any suitable discharge-valve a. The chamber E2 is provided at its base with a discharge-opening, as at e, which may discharge into a spout E4 or otherwise, as may be desired.

The various `diaphragme employed in the machine may be of any suitable construction, foraminous or otherwise, as may be desired.

Within the air-trunk B, I locate a scattering-plate L. This scattering-plate extends at an angle above the orifice h and is provided on its upper surface with teeth to separate the stock. Depending from the lower edge of the scattering-plate is a lip Z, said lip dividing the adjacent portion of the air-trunk intopassage- Ways on either side thereof, as indicated at B3 B4, the passage-way B3 leading to the opening b and the passage-way'B4 leading to the upper end of the trunk B, into which upper end the stock is fed, as through a spout or hopper B3. In the vertical trunk B, attached to the case C, is an additional scouring-plate b3 at the side of the passage-way B4 to break up the entering stock. Beneath the passage-way B4 is a deilector b4. Above the openingb is an additional deiiector b3. D2 is the fan-shaft, and a driving-pulley located thereupon.

While I have shown but one chamber E3,

with a single settling-chamber at the base thereof, I would have it understood that as many of said settling-chambers analogous to the chamber E2 may be provided within the chamber E3 as may be desired simply by removing the fan rearward still farther and adding additional inclined walls analogous to the inclined walls E and E', so that as many settling-chambers may be formed at the base of the-chamber E3, with their discharge-passages, as may be found desirable within the scope of my invention.

By providing an opening H, as in my construction, a circulation ofglair is provided for through the chamber G, the opening II into the chamber A, thence into the trunk B through the opening b, into the chamber E3, and thence into the fan-case, the air being delivered from the fan-case into the chambers G and A through the, opening d', the opening A3, and the passage-way above the diaphragm F', as at f4. In this manner I effect a continuous circulation not only through the chamber A, but also through the chambers G and E3.

By rthe .employment of my diaphragm J. that portion of the air not ,passing through the diaphragm is compelled to travel thereunder, and, inasmuch as air will take the easiest course, it is evident that in my device the air-from the chamber A will pass through the opening h directly upward in the trunk B, or, in otherwords, up the wider portion of said trunk, and there would be no tendency for the air to pass down the narrowed portion of said trunk or of impurities dropping into the leg B. The diaphragms preferably would be made of foraminous material when the machine was designed for cleaning grain; but for other purposes, as for grading millstock, the diaphragms would preferably be solid.

What I claim as my invention is- 1. A purifier, separator, and grader, provided withseparating chambers A and E310- cated the one above the other, a partition F in one side of said chamber A, with adjustable diaphragms F and F2 at either end thereof adapted to control the air passing around said partition; a fan casing located in the chamber E3 and communicating therewith and also communicating Wit-h the chambers A and G, and a vertical trunk communicating toward its base with the chamber A and toward itsv upper end with the chamber E3, and a fan within said casing, substantially as set forth.

2. A purifier, separator and grader, provided with separating chambers A and E310- cated the oneabove the other, a settling chamber G communicating toward its lower end with the chamber A, a vertical partition F separating said chamber G from said-cham- IOO ber A, with adjustablediaphragms F. and F3 at the top and bottom of said vertical partieating with the chambers A and G, and a vertical trunk communicating toward its base with the chamber A and toward its upper end with the` chamber ES, and a fan within said fan casing, and dependent diaphragms in the chambers A and E3, substantially as set forth. 3. In a purifier, separator and grader, the combination of a casing forming a separating chamber, a partition F forming a settling chamber G communicating toward its base With said separating chamber, a fan discharging into said separating chamber and into said settling chamber, a vertical trunk communicating with said separating chamber and with the fan easing, said partition F provided at its upper and lower ends with adjustable diaphragms, substantially as set forth.

4. In a purifier, separator, and grader, the zo combination of separating chambers A, E3, a Vertical trunk having openings b, b on the same side thereof communicating respectively with said chambers, a feeding device at the top of said vertical trunk, a vertical partition F, with adjustable diaphragms at each end thereof; settling chamber Gseparated by said partition from the chamber A, a fan having its casing communicating With the chambers E3, A, G, and a sloping and a vertical scattering plate located in said vertical trunk, substantially as set forth.

In testimonywhereof I sign this specification in the presence of two Witnesses.

DAVID J. DAVIDSON. Witnesses:

N. S. WRIGHT, M. A. MARTIN. 

